Sequestered from the city's traffic and noise, the newly renovated course seems somewhat an anomaly. But 10 of New York City's 13 public courses are undergoing renovations costing $50 million - and all the funds are coming from private companies that have contracts with the Parks Department to operate the courses. The biggest player is the privately owned American Golf Corporation, which is putting $26 million in capital investment into six courses that it operates for the city. With the New York City Department of Parks and Recreation, and by extension taxpayers, chipping in no money at all, the much-improved...